Wood-turning machine



July 21, 1925.

J. HCOGERHYDE woon TURNING MACHINE Filed Jan. 28- 1924 3 Sheets$hee-.

1? firxmy Jul 21,- 1925.

J. HOOGERHYDE WOOD TURNING MACHINE 3 Sheet-Sheet 2 Filed Jan. 28. 1924 July 21, 1925.

J. HOOGERHYDE woon TURNING MACHINE 3 Sheets-Sheet 3 Filed Jan. 28. 1924 Patented July 21, 1925.

UNITED STATES JAMES HOOGERHYDE, OF GRAND RAPIDS, MICHIGAN.

WOOD-TURNING MACHINE.

Application filed January 28, 1924. seriain-o. 689,040.

To all whom it may concern:

Be it known that I, JAMns HOOGERHYDE, a citizen of the United States of America, residing at Grand Rapids, in the county of Kent and State of Michigan, have invented certain new and useful Improvements in \Vood-Turning Machines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to a wood turning lathe by means of which a large quantity production may be obtained of duplicate pieces. It is a primary object and purpose of the present invention to make a machine of this character wherein pieces of wood stock square in cross section may be successively brought to suitable cutters and cut to the desired form very rapidly, a single operator of the machine only being required to place the stock in place to be en gaged by the machine and thereafter brought to the cutters, the operator removing the finished work and also manually operating the holder of the unfinished stock toward the cutters, the organization of the machine being such that one operator can readily perform these operations without loss of time. Further objects of the invention are to make a machine of this character which is practical and operative, and fully capable of sustaining the continuous usage to which it is subjected in practice; and to provide a machine, the controls of which are located at one end thereof, all within easy reach of a single operator while the stock may be placed in the machine and the finished product taken therefrom' at the same place. Various other objects and purposes than those enumerated, together with mechanisms for attaining the same will appear as understanding of the invention is had from the following description, taken in connection with the accompanying drawings, in which,

Fig. 1 is a front elevation of the machine with parts broken away for clearer disclosure.

Fig. 2 is an end elevation thereof.

Fig. 3 is a fragmentary front elevation of one end of the pivotally mounted work holder used in the machine.

Fig. 4 is a like view of the opposite end thereof.

Fig. 5 is a fragmentary. detail view partly in section showing one of'the belt driving means employed. 7

Fig. 6 is a' fragmentary plan view of the machine. j v

Fig. 7 is a fragmentary enlarged side'elevation and section showing the means used to limit the movement of the work holding device toward the cutters. Fig. 8 is a'fragmentary front elevation of the construction shown in Fig. 7', the adjustmg screw being in cross section.

Fig. 9 is a fragmentary side elevation showing one of the holders for thesquare stock. 7

Fig. 10 is an elevation of a turned form which may be made by the machine-from said square stock, and V I Fig. 11 is a fragmentary detail view of the means'used to automatically control the driving of the work holding device.

Like reference characters refer to like parts in the different figures of the drawings. In the construction, a supporting casting 1 is provided at the upper side of which two supporting brackets or heads 2 and 3 are carried, the former being divided and having two spaced apart bearings adjacent its upper portion in which a shaft 4 is rotatably mounted. The bracket 3 carries a spindle '5 similar to a tail stock spindle in wood turn ing lathes, while the shaft 4 is similar to a head stock spindle. Between the ends of the shaft 4 and spindle 5 a'bar 6 is located which is adapted to carry anydesired col lection of cutters for the production of a desired form in turning wood. When shaft 4: is driven, the bar 6 with the cutters thereon rotates at a high degreeTof speed. 7 An electric motor 7 has its shaft in alinement with the shaft 4 and the adjacent ends of the shafts are connected bymeans'of any suitable coupling, indicated at 8. The motor is supported on a bracket 9 attachedto-o'ne end of the main supporting castingl.

On the shaft 4: near thecoupling 8 apulley 10 is located around which a belt 11 asses said belt also assin around a wheel P t) extend from the bracket supporting the shaft 13 and carry idlers 19 which serve to mount the belt as shown in Fig. 5, that is the. belt passes around in front of the drive pulley 14? and thence upwardly and downwardly around and back of theid lers 191.

' The shaft I7 servesas a sup re for. the pivotal mounting of a work holding" device. Inconstructioii said device comprises rigid frame having a plurality oftve'rtical' spaced apart legs 20, thelowei ends, of which are pivotally mounted on. the'shaft 17. These legs; are ,"ihteg'ral l y connected by cross membersa distance above 1 their lower ends and by; a table member a at their upper ends, the" upper surf ce of which is flat and positioned substantially horizontal. A head stock 22 is permanently secured at one end 'ofithe table' (see. Fig; and like the part 2' heretofore described has two. spaced apart upwardly extending arm's, ''ach formed with a be'arin atits upper end. short shaft or spindle 23, like a wood turning lathe head} stock spindle is rotatably mounted in the hearing, at the upper end of the inner of 'sai'darins anda shaft 24 is mounted in theother bearing in alinement with spin dle 23". Al clutch 2b is used to connect the said shaft 24 and" spindle 23. Normally the clutch is separated and the shaft and spindl'e are'not connected. A sprocket wheel 26 is fixedto the outer end of shaft 24 and is drie -en; by a chain 27 which passesaround' a secondi lsprocl tetf wheel 28 rotatable with. the

wheel'1'6i I p The tail stock 29' (see 4) is fiXed 'at the opposite end ofthe table 21 and at its upper endhas a sleeve through which a tail stock spindle- 3O passes,;being mounted for longitudinal'moveinents.' Spindle 30 is provided with a rack 31: at its upper' side at one endwith'whicha pinion 32fi'X'e'd on a short shaft 05pm 33 engages, the pin" being mounted for rocking movements and having a weighted handle 34f extendihgtherefrom for manual operation of the same. The wo'odth'at is tobe' turned is square in cross section, preferably, and? is shown 35 as a square-stick of a length to be received be tween the headi n'd tail stock spindles, the weighted arm 34 normally.movingthe s indie 3050 that it enga es an end of the art 3'5-and' presses the opposite end into'engage ment with' the head stock s'piiid'le;

. Links 36' at one end arepivotally'connecfi ed to the. l'egstQO or'the pivotally mounted frame and attlieir rearends'are pivotal'ly connected to arms"l37 which are secured on arock shaft 3s roam-1y meuneeda aa suitable bearings formed in two forwardly extending brackets 39 which are permanently attached to the main support 1. An operat ing lever 38 is secured to the end of the rock shaft nearest the tail stock end of the table 21 and the same may be manually operated. lVhen turned toward the machine as shown in full lines in Fig. 2, the pivotally mountedframe and the mechanism carried thereon are moved toward the machine; and when turned back, the'pivotally mounted' frame is moved away to occupy the posit'ion substantially shown ind'ott-ed lines in v 'W' ien the; frame carrying the work hold ing head and" tail stocks is moved toward support 1, the clutch at25 is automatically connected. To accomplish this, a barAO having a cam shaped edge 10" (see Fig. 7 is secured'to and'pr'oj'ects' forwardly from the main support 1". lever 41. is pivot ally mounted between its ends at 42" on the" pivotally mounted work carrying frame seer-1g;

3'), and its upper end is" formed as a yoke 453 to engage with the collar 25 on one mewber of the clutch 25, lower end being equipped with a small roller 14'. the pivotally mounted frame moves toward the support 1, roller 44" rides against the cam edge of the bar 10 and operates the lever 41 automatically to brin'g the clutch memhers into operative enga'gel'nei'it' for the driv- 111g ofth'e spindle 23, as is evident.

It is necessary to limit the movement of the work carrying member toward the main support and the cutters. This is done means of an adjusting and stop" screw 45 threaded through a d ependi'ngflange' tothe table 21, as shown: in 7, and lockingthe screw in'any position to which itis adjifsted by a lock nut 46, preferably of the form shown. The outer end of screwYifi is" provided with an operating'head 45 for manual operation. The end or the screw" coming against the main support 1 stops the movement of the work toward the cutters at a predetermined position sothat the cutters on the bar 6 can act on the work 35 o'hly'to a certain point,. thus determining the size of thefihish'e'd articlef In front of the rock shaft" 38" a? rod 47 is located and supported by the brackets 39; lVIem'b'ers 48" are adj'ustably clamped onthe rod 47 and each carries a vertical rod $9 On" each rod 491; fixture '50: is'ad'j'i'istably clamped, andeach of" said fixtures carries a rod" 51 located horizontally and likewise ad] justably clamped in said fixtures. The rods 51 eXtendtowa-rd the machine and onyeach a mem ber' 52 is adjustablyi mounted and formed 'wi'tlran upwardly projecting leg 52 the two parts 521 and '52 providing a: seat with sides located at" right an'glesto each other so as to receivethe bar 35 square in arose section. These lie-rears for the stock bars 35 are located so that when the work holding device is moved back and away from the cutter mechanism, the ends of the head stock and tail stock spindles 23 and are positioned so as to properly engage the ends of the said bars 35, as shown in the dotted lines in Fig. 2 and also as indicated in Fig. 6.

in the operation of the machine, the motor is running continuously, driving the bar 6 and the cutters thereon at high speed. The spindle or shaft 24 is driven continuously but at a much reduced speed. Supposing the pivotally mounted frame to be in the dotted line position shown in Fig. 2, and a bar seated in the holders therefor, the tail stock spindle 30 is moved so that it eugages the adjacent end of the bar and presses the opposite end of the bar into secure engagement with the spindle 23. Handle 38 is then grasped and thrown to the full line position shown in Fig. 2, thus rocking the shaft 38 and moving the pivotally mounted frame about the axis of the shaft 17, bringing the bar 35 to the cutters on the rapidly rotating bar 6. Simultaneously with this movement, the roller 4L4 on the lever 41 rides on the cam edge of the bar 40 and operates the clutch 25 so that the tail stock spindle is rotated slowly, thereby turning the bar 35 with a comparatively slow motion. By the time the bar 35 has been turned through one complete revolution, the finished article turned to form is completed. In Fig. 10, at 35, a finished shape is shown, one of the many forms that may be made with different varieties of cutters on the bar 6. Handle 38 is then brought back to its first position and the pivotally mounted frame moved to dotted line position, the weighted arm 34 operated to release the turned article 35 which is removed, a new bar placed in the holders therefor and the operation repeated. In practice, the handle 38 will be moved from its full line position shown in Fig. 2 to the dotted line position and during this movement, the finished article 35 released and removed, a bar 35 having been placed in the holders therefor while the turning operation is being performed so that as soon as the pivotally mounted frame reaches the outer position, the lever or handle 3% may be operated to engage the new bar. This makes for great rapidity of pro duction.

The various adjustments of the limit stop to the pivotally mounted frame, of the fixtures on the rods 49, of the rods 51 on said fixtures, and of the holders of the stock bars on the rods 51 make it possible to use the machine with different sizes of stock with respect to cross sectional dimensions, and by adjusting the tail stock 29 to different positions and properly adjusting the members 48, different lengths of stock may be used.

Of course, the cutter assembly on the bar 6 may be any combination desired for the production of a required form, and is subject to wide variation. If at any time it is desired to turn the bar 35 in a direction opposite from what it has been rotated, this can be done through the belt guide mechanism shown in Fig. 5. This may be desirable under certain conditions, and means is provided therefor.

The machine is very practical and in practice has proved its merits as a quantity productionmachine in turning wood to desired round forms. The invention is defined in the appended claims and is to be considered as comprehensive of all forms of structure coming within the scope of said claims.

I claim:

1. In a machine of the class described, a main support, a bar on which a cutter assembly may be mounted positioned horizontally and mounted for rotation at the upper side of the support, a motor for driving said bar at high speed, a frame located in front of the support and pivotally mounted thereon at its lower end to move toward or away from the support, means for manually moving said frame, head and tail stocks attached at the upper side of the frame, a longitudinally movable spindle mounted horizontally through the tail stock spindle, a shaft and a head stock spindle located in alinement and rotatably mounted in the head stock, a

normally disconnected clutch'between said shaft and spindle, a lever pivotally mounted between its ends on the frame and connected with the clutch, a cam member carried by the support over which the lever rides atone end to operate the clutch to connecting position when the frame is moved inward toward the support, means for driving the said shaft from the motor at a low rate of speed, and fixed means in which a length of material may be placed so as to lie between and aline with the said head and tail'stock spindles when the frame is moved outward away from the frame. l

2. In a machine of the class described, a

support, a bar mounted above the support for rotation on which a cutter assembly is adapted to'be secured, a motor for driving the bar at high speed, a substantially vertical frame located in front of the support and pivotally mounted thereon at its lower end for turning toward or away from the support, brackets attached to and extending forwardly from the support, a rock shaft mounted in said brackets, arms attached to the rock shaft, links connecting the arms to the frame, a handle attached to one end of the rock shaft for manual operation thereof, head and tail stocks carried at the upper side of the frame in spaced apart relation, a tail stock spindle mounted for longitudinal movement in the tail stock, means for tbwstfd the s'd-ppo'ft. i

.nir 55:" 8. A: construction contalnlhg the elements l v :51; 1n colnbl atlon defined 1n 01211111 2, OOII I bIIIBd 

